Specifications

X723-300151 8-1 Issue 2
8 3000 Power Supply Equipment
8.1 General Description
The 3000 power supply unit (PSU) may be used to power two independent,
co-located 3200 equipments.
The 3RU shelf may be equipped with up to 4 plug-in PSUs depending on
the chassis options supplied. Available combinations include:
Single Power Supply (1 PSU), Dual Power Supply (2 independent PSUs),
Single Redundant Power Supply (2 PSUs in parallel) or Dual Redundant
Power Supply (2 independent sets of paralleled PSUs).
Single versions occupy half the chassis, the right hand side viewed from
the front. Two paralleled PSUs provide redundant operation with active
current sharing and hot-swap capability.
Both AC, 240V/115V switch selectable, and -48VDC PSUs are available. A
24VDC version is available to special order. Each PSU has a power input
switch, fuse and power good indicator on the front panel.
PSU connectors are coded to prevent accidental plugging-in to the wrong
chassis type.
8.2 Mechanical Layout
The Power Unit Shelf is a 19 inch 3RU chassis assembly. Figure 8-1
shows the front layout of the unit and the positions of the PSUs in a fully
equipped chassis.
PSU positions for the various types of Power Unit Shelf are as follows:
Type PSU Positions
Single 1A
Dual 1A, 2A
Single Redundant 1A, 1B
Dual Redundant1A, 1B, 2A, 2B